[Public-List] Vibration

[John Birch]

Could be as simple as resonance harmonics, does it disappear if you edge up the RMP's slightly?

Happy Fourth y'all from Canada.

Cheers,

John

-----Original Message-----
From: Public-List [mailto:public-list-bounces at lists.alberg30.org] On Behalf Of George Dinwiddie via Public-List
Sent: July 4, 2019 11:31 AM
To: public-list at lists.alberg30.org
Cc: George Dinwiddie
Subject: Re: [Public-List] Vibration

Here on the bay, barnacles are the most likely reason for the prop to be 
out of balance, but it could be anything.

  - George

On 7/4/19 9:31 AM, Winslow Ayer via Public-List wrote:
> No barnacles in Lake Champlain...but I can check. Could the prop be out of balance? Doesn’t seem likely but one never knows.
> 
> Winslow
> 
>> On Jul 4, 2019, at 9:27 AM, Mike Lehman <mlehman at gmail.com> wrote:
>>
>> Like Gord says it is most likely a worn cutlass bearing. Easy to check when the boat is out of the water by wiggling the shaft. If the shaft feels loose, it's probably it.
>>
>> It could also be barncales on the prop.
>>
>>> On Thu, Jul 4, 2019, 8:47 AM Winslow Ayer via Public-List <public-list at lists.alberg30.org> wrote:
>>> Does anyone have thoughts on why I get a vibration above 1200-1300 rpm’s when motoring? I have a feeling that it may be in the alignment of the shaft but I don’t know.
>>> It’s not unbearable but it is annoying (and loud).
>>>
>>> Thanks for any advice,
>>>
>>> Winslow Ayer
>>> Tinkers Damn #283

-- 
  ----------------------------------------------------------------------
   When I remember bygone days                         George Dinwiddie
   I think how evening follows morn;            gdinwiddie at alberg30.org
   So many I loved were not yet dead,           http://www.Alberg30.org
   So many I love were not yet born.                          also see:
                'The Middle' by Ogden Nash     http://idiacomputing.com
  ----------------------------------------------------------------------



_______________________________________________
These businesses support your Association:
http://www.alberg30.org/store/A30supporters.html
Please support them.
_______________________________________________
Public-List mailing list
Public-List at lists.alberg30.org
http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org